PokeIt is program that uses BASIC's POKE command to change the border and background colors. POKE stores an 8-bit number to a memory location. In 6510 machine language this done with two instructions, first by loading one of the 3 CPU registers using LDA,LDX, or LDY instructions and then calling the corresponding store instructions STA,STX, or STY.

Execute a "SYS 32768" on the machine language version to see the source code in Turbo Macro Pro.

• More information on the BASIC Poke Command.